2 files changed, 24 insertions, 1 deletions

diff --git a/src/timesync/timesyncd-manager.c b/src/timesync/timesyncd-manager.c
index 696dd10e69..b7b39ef822 100644
--- a/src/timesync/timesyncd-manager.c
+++ b/src/timesync/timesyncd-manager.c
@@ -875,6 +875,7 @@ int manager_connect(Manager *m) {
                         manager_set_server_name(m, m->current_server_name->names_next);
                 else {
                         ServerName *f;
+                        bool restart = true;
 
                         /* Our current server name list is exhausted,
                          * let's find the next one to iterate. First
@@ -891,6 +892,8 @@ int manager_connect(Manager *m) {
                                 f = m->link_servers;
                                 if (!f)
                                         f = m->system_servers;
+                                else
+                                        restart = false;
                         }
 
                         if (!f)
@@ -902,6 +905,25 @@ int manager_connect(Manager *m) {
                                 return 0;
                         }
 
+                        if (restart && !m->exhausted_servers && m->poll_interval_usec) {
+                                log_debug("Waiting after exhausting servers.");
+                                r = sd_event_add_time(m->event, &m->event_retry, clock_boottime_or_monotonic(), now(clock_boottime_or_monotonic()) + m->poll_interval_usec, 0, manager_retry_connect, m);
+                                if (r < 0) {
+                                        log_error("Failed to create retry timer: %s", strerror(-r));
+                                        return r;
+                                }
+
+                                m->exhausted_servers = true;
+
+                                /* Increase the polling interval */
+                                if (m->poll_interval_usec < NTP_POLL_INTERVAL_MAX_SEC * USEC_PER_SEC)
+                                        m->poll_interval_usec *= 2;
+
+                                return 0;
+                        }
+
+                        m->exhausted_servers = false;
+
                         manager_set_server_name(m, f);
                 }
 
@@ -1042,7 +1064,7 @@ static int manager_network_event_handler(sd_event_source *s, int fd, uint32_t re
         online = network_is_online();
 
         /* check if the client is currently connected */
-        connected = m->server_socket >= 0 || m->resolve_query;
+        connected = m->server_socket >= 0 || m->resolve_query || m->exhausted_servers;
 
         if (connected && !online) {
                 log_info("No network connectivity, watching for changes.");
diff --git a/src/timesync/timesyncd-manager.h b/src/timesync/timesyncd-manager.h
index 2345bf8f36..bb3e50915e 100644
--- a/src/timesync/timesyncd-manager.h
+++ b/src/timesync/timesyncd-manager.h
@@ -41,6 +41,7 @@ struct Manager {
         LIST_HEAD(ServerName, fallback_servers);
 
         RateLimit ratelimit;
+        bool exhausted_servers;
 
         /* network */
         sd_event_source *network_event_source;